Method NextBatch

cpp/src/parquet/arrow/reader.cc:115–123

  virtual const std::shared_ptr<Field> field() = 0;

  ::arrow::Status NextBatch(int64_t batch_size,
                            std::shared_ptr<::arrow::ChunkedArray>* out) final {
    RETURN_NOT_OK(LoadBatch(batch_size));
    RETURN_NOT_OK(BuildArray(batch_size, out));
    for (int x = 0; x < (*out)->num_chunks(); x++) {
      RETURN_NOT_OK((*out)->chunk(x)->Validate());
    }
    return Status::OK();
  }

  virtual ::arrow::Status LoadBatch(int64_t num_records) = 0;